background: work-related musculoskeletal disorders (msds) of the upper limbs are the most common occupational diseases and injuries and one of the causes of disability in workers. therefore, this study was conducted to assess the prevalence of msds and the risk of these disorders using the loading postural upper body assessment (luba) method. materials and methods: this descriptive study was pe...

background premenstrual syndrome (pms) is a group of disorders that many girls and women suffer from. it is well known that an appropriate diet as well as environmental factors plays a major role in quality of life. objectives this study evaluates food patterns for university student girls who suffer from pms and are healthy. materials and methods eighty-six university student girls from ahvaz ...

This research was conducted in the west forest of Guilan, northern Iran. Data from various harvesting methods for 20 years were collected. Results showed that, productivity rate of round wood, pulp wood and fuel wood has had an upward trend, while rate of traditional products (lumber, sawn wood, charcoal, etc.) has had a downward trend. Production cost has been investigated in this research. Th...

liposomes as a drug carrier have numerous dominancy. liophilization is the most propr form of these products for long-term maintenance, but this procedure is affected by unstabilizing agent that results in destruction of membrane, release of content and change in size and microbial contamination hence for prevention of the adverse effects, the protective role of sugars such as: maltose, fructos...

Let $mathcal{H}$ and $mathcal{K}$ be infinite dimensional Hilbert spaces, while $mathcal{B(H)}$ and $mathcal{B(K)}$ denote the algebras of all linear bounded operators on $mathcal{H}$ and $mathcal{K}$, respectively. We characterize the forms of additive mappings from $mathcal{B(H)}$ into $mathcal{B(K)}$ that preserve the nonzero idempotency of either Jordan products of operators or usual produc...